I am so confused on how this works Here is the question I have but I do not understand how to put the information in and find what it is looking for.

Use the normal distribution of SAT critical reading scores for which the mean is 509 and the standard deviation is 117. Assume the variable x is normally distributed.

(a)

What percent of the SAT verbal scores are less than 675?

(b)

If 1000 SAT verbal scores are randomlyselected, about how many would you expect to be greater than 525?